eat (someone or something) alive
1
of insects : to bite (someone or something) many times多次咬；反复咬 2
: to badly defeat or harm someone or something重创；力挫 -
Their competitors are going to eat them alive if they don't cut their prices.如果他们不降价，竞争对手将会向他们重拳出击。
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If this story gets out, the press will eat him alive.如果这件事抖搂出去，媒体将不会饶了他。